Turning machine



D. TURCOTT TURNING MACHINE Filed'Aug. 4. 1923 5 Sheets-Sheet 1 M129, 1927. 1,650,69 D. TURCOTT TURNING MACHINE Filed Aug. 4, 1923 5 Sheets-$heet 2 Tnvaniwr M '22: 5565711655 3 WM vii/314 o. TURCOTT TURNING MACHINE Filed Aug. 4, 1923 5 Sheets-Sheet 5 Nov. 29, 1927.

D. TuRco'r'r TURNING MACHINE Filed Aug: 4, 1925 5 Sheets-Sheet 4 y 3 m w 9 E Nov. 29, 1927., A

D. TURCOTT I TURNING MACHINE- Filed Aug. 4, 1923 5 Sheets-Sheet 5 Patented Nov. 29, 1927.

regs; item :oavromuncornor Betta. vvlsoensin, assronon To 1 BIYAztEs Macrame coivr- PANY, or BELOIT, wrsconsrma ooaroaa'rron or WISCONSIN.

sesame memes.

ltpplication filed August 4, 'Sei'iaI Nor My invention pertains to wood-turning and similar machines, and relates inorje especially to improved mechanism forfacilitating the introduction of tl ieavork into the machine in position to beac'ted upon by the revolvingknife-blades.

To enable those skilled in this art to have a full and complete understanding of the invention and its various structural and functional advantages, in the accompanying drawings forming a part of thisspe'cificaticn a deslrable and preferred form of the 111- vention has been illustrated in detail, like reference characters being employed for the same parts throughout the several views.

In these drawings,

Fig. l'is a front elevation of the new machine with certain parts omitted for greater clearness in illustration; 7

Fig. 2 is a vertical cross-section, onan enlarged scale, on line 2 2 of Fig. 1;

Fig. 3 is a vertical cross-section on line 3-3 of Fig. 1, the parts being illustrated on an enlarged scale; a c

Fig. 4 is a horizontal section through the tail-stock, on line 4;4 of 3;

Fig. 5 is a vertical section through the tail-stock, on line 55 of Fig. 3;

Fig. 6 is a vertical section on line 66 of Fig. 7 is an enlargedsectional detail; Fig. 8 is a "face vievv otthe spirallythreaded, clamp-actuating member of the tail-stock; i c

Fig. 9 is a longitudinal, vertical section through the head-stock of the appliance;

and I Figs. 10 and 11 are sections showing the locking mechanism permitting manual open ing and closing of the jaws of the tail-stock.

Referring to these drawings,it will be perceived that the machine includes a main frame 21 of irregular and appropriate form and shape.

The appliance includes a laterally-1novable table or support 22 (Figs. .1 and 2), the lower frame portion of which-is supported ateach end by abacklink 23 rockingly mounted on the main frame. M24 and pivotally connected to the part. 25 at the point 26, such trame25 being also supported at each end atthefront by a link 27 fulcruined at 2'8 and rockinglyconnected to the frame at 29. A pairof links 31, one atearh end, is pivoted to the part 25 at 32, and is reference numeral .65.

connected 5533 to t'heupper end 0fac0rrespondlng arm 34 fastened to a horizontal front. shaft 35 rockinglymounted in bearings 36,136, and equipped with a manipulating handle 37.

As the handle 37 is'rocked back and forth,

thetable 22 and theparts which it carries will havea forward and rearward movement In a V substantially horlzontal plane.

This 'tablejand its nioui'iting is old and Well known dearer-ms no direct part of the present in 'vention.

v The main frame is equipped with three bear1ngs41, 42 and 45, accommodating a shaft 43 on which the cutter knives (not shown) designed to be mounted, such shaft being adapted to be rotated in any approved manner, as by means of a. belt a stationary part 51 and a portion 52 hinged thereto at. 53 andprovided Withan arm 54 coniiected bya link 55 toa nyarm 56 on an appropriately mo'unted rear rock shaft 57, 'Which s supplied with another arm 58 00- operating with a bar 59 extended through a holein the main frame, and having a beveled end 61, the bar passing beneath and coacting with a suitably-mounted roller 62, the front end of such bar being piv otally connected to the movable table 22 ;at the point 63.

bar 59travels Withit, and'after a certain extent of such travel it permits thearm 58 to rise and the hood section 52 to rock down- \vardly more or less, encasing or enclosing the revolving knives. hen the table is moved rearwardly the beveled end of the bar engages a roller on the arm 58, and during its continued rearward inovemeiit causes, the openingor upward rocking of the hood element 52, all as will be readily understood. The table :22 is supplied With a head-stock characterized as a Whole 64,.andan adjustable tail-stock similarly designated by the Refrriii first to the Then the table'22 moves forwardly, the

headstock. which is held. in posit-iorron thetable by the screws I or bolts 66, 66,.it illbe seen thatit incorporates two ball-bearings 'Zljand for a. shaft 73 Iequipped at. intruding end avitha suitably-shaped, toothed center 74.

lilo

mounted on a lower shaft 82 revoluble in a pair of bearings 83 and 84, shaft 82 being operatively connected to the shaft 78 through inter-meshing bevel gears 85 and 86.

Shaft 82 is equipped with two pulleys S7 and 89 and an intermediate, loose pulley 88, crossed and straight belts 91 and 96 cooperating with these pulleys and with a pulley 92 on anupper main shaft 93 rotatable in bearings 94 and 95 and equipped with a cone pulley 98 by which it may be driven, a suitable belt-shifter 97 being provided for manipulation of the belts as may be required.

The enlarged portion of the head-stock includes a casing 101 enclosing the worm and worm-wheel and equipped with a cover plate 102, projecting inwardly from which is a bearing 103 (Figs. 2 and 9) slidingly accommodating a rod or shaft 104 pivotally connected at 105 with the bearing or collar 77 and equipped with acoiled, expansion spring 106 between the rear end of the bearing 103 and suitable nuts 107 on the threaded end of the red. It will be perceived that this spring, by acting through the rod. normally yieldingly holds the worm 76 in intermeshing operative engagement with the teeth of the worm-wheel 75. p

A bent arm or lever 108 fulcrumed on a stud 109 on the inside of the cover plate 102 is rockingly connected with the hearing or collar 77 in alinement with the axis 105, and it'has a depending end adapted to ride on thetop face of a slightly curved cam bar 111 fulcrumed or rockingly mounted on the main frame at 112 and resting on a roller 113 carried by thetable 22.

The construction of these coacting elements is such that when'the table 22 is rocked forwardly, carrying with it the worm and worm-wheel, the lever 108 by co-operation with the cam bar 111 and against the action of spring 106 pushes the worm forwardly. slightly out of mesh with the wormwheel, thus temporarily interrupting the rotation of the spindle 73 and the stock 0 center 74.

pling 127 (see Fig .9).

This shaft 126, as is clearly'illustrated in Fig. 5, extends through and is revoluble in a bearing 131 in the lower portion of the I tail-stock 65,,the main supporting body133 of the latter being adjustably secured by screws 132 to the table and )roviding a hearing 130 for an interme iate, cylindrical member 134 having a square hole 135 extended through it for the accommodation of the stock to be worked on.

A plurality of screws 130, 136 fasten a ring 137 against one face of the element 134, such ring having a central, square aperture in register with the corresponding aperture 135, the tail-stock being provided with a cover plate 138 fastened against the face of the member 133 by screws 139, such plate having a cylindrical opening provided with an oil-tight packing for the accommodation of the ring 137, which necessarily revolves with the part 134, being rigidly fastened thereto by the screws 136.

Inside of this tail-stock structure the ring member 137 is equipped with a gear 141 in mesh with a driving pinion 142 keyed to the shaft 126 and having a hub occupying a round hole in the lower portion of the plate It will be seen therefore that the rotation of the shaft 126 is transmitted through the intermeshing gears 142 and 141 to the two elements 137 and 134, which are fastened together by the screws mentioned, and which are revolubly mounted in the bearing 130.

The tail-stock includes also a round member 151 with a central aperture 152 therethrough of general square shape, the element 151 being held securely against the face of the part 134 by a number of screws 153, this end of the tail-stock having a suitably shaped and apertured cover-plate 154 held against the part 133 by suitable screws and having an oil-tight bearing on the outer cylindrical surface of the part 151, the latter having two opposed grooves or slots 156, 156, adapted to accommodate the angular stock clamping members 157, 157, eachof which inside of the tail-stock has an outstanding part 158 witha short, spirally-arranged thread on the outer portion only of its inner face;

A ring 159, having on one face a spiral screw-thread or scroll 160, is revolubly mounted on the outer cylindrical face 101 of the member 134, not accommodated in the bearing 130, and between the parts 159 and 130 the element 134 has an outstand ng, separatingrib 102.

A ring-gear 163, by means of suitable screws, is fastened against the inner face of the screw-threiuled member 159, and, as is shown inFig 4, this gear is in mesh with another gear 164 on'a shaft 165 revoluble in a bearing 166 in the member 133, the protruding end of the shaft being fitted with a manipulating handle 167.

It will he understood that the work-clamp ing jaws 157, 157 may be made to expand and contract by turning handle 167 proeadset) vided the part 184 and its associatedclements are temporarilyprevented from rotating. It is necessary, therefore, to use some locking means in order to ,makethe handle 167 efiiective for the desired adjust ment of the jaws. 7

Accordingly, shaft 126 has'acollar 171 (Figs. 9, 10 and 11) keyed thereto, such collar or sleeve around its periphery beingprovided with a pair of radial'recesses or cavities 172. p

On the table I provide a block 17 3 having a bearing 174 accommodating a sleeve 175 equipped with a shoulder 176, between which and a similar shoulder177 in the part173, "a coiled spring 178 encircling the sleeve is interposed, such spring tending to force the sleeve to the right as the parts are viewed in Figs. 10 and 11, the'sleeve having alongitudinal slot 179 into which the end of a pin'181 in the part 173 projects, permitting the sleeve to have a limited longitudinal play in its bearing, the extremefend of the sleeve having an enlargement 182 limiting the movement of the sleeve to the left.

The sleeve has abeaiinglSEl for a rod 184 with a tapered end'l85 adapted to enter any one of the locking recesses 172, the pin or red having a larger head 186 at its opposite end accommodated in a' lar'ger'cavity 187 in the sleeve, with coiled, expansion spring 188 received in such larger cavity and interposed between the head 186 of the pin and a plug 189 closing the end of the hole, the latter being held inplalce by a set screw or cross-pin 191.

The appliance includes in addition a front, fixed shaft 192supported on-themain frame at 193, 193, and carrying at'an end a split block 19 1 in which is'mounted an npstand ing rod 195 with a clamp 196 at its upper end adjustably holding a stop rod or pin 197.

rojecting upwardly from the shaft 192 I employ two brackets 198, 198, each fitted at its upper end with a clamp 199 carrying a rearwardly-inclined rod 201 having a work-rest 202 at its end.

Thespindle 73, as is shown in Figs. 1 and 9, is supplied with a demountable or deachable form 203 which determines the shape of the work turned out by the revolving knives, various styles of products being capable of production by the use of suitablyshaped elements 203.

The operation of the appliance occurs practically as follows:

Assuming that the machine is in Opera tion and that it is desired to insert apiece of work to be operated upon by the revolv-' i-ng knives, the operator pulls forwardly on the handle 37, thereby shifting the table 22 and theparts which it carries in the same direction.

The table having reached its foremost" come operative.

position in alinemenhwith the work rests 2925 202, the constantly-rotating worm 76 "will have become separated from 'the'com- 'nefction between the worm and wormwheel, if it'were attempted. to release the workclai nping jaws 157, 157 by the turning of handle 167, this could not be accomplished because the parts geared tosuch handle are fnowlfreely rotatable,and they would, there fore, revolve under such circumstances if the locking mechanism described had not be- When the table moved forwardly, the end of sleeve 182 struck the abutment 197, pushing the sleeve and its locking pin 18 1 towin-u the recessed collar 171. If one of the recesses 17 2 was in register, or substantially in registeiy'with the pin 18 1, the latter directly entered it and locked the shaft 126 against turning. Ifno such recess was directly in alineincnt with the pin as the pin was pushed out, thepin could, ride on the periphery of the collar, due to the yield of spring 188, until the next recess came in position, whereupon the expansion of the spring forces the pin into locking position. The parts thus having been locked against rotation, the operator turns the handle 1G7, which revolves the threaded scroll-element 159 relatively to'the j aws, thereby expandingjtheih and releasing the formerly clamped work, which can now be readilyremoved. Anew piece of workhaving beenrested upon the seats 202,202, the operator turns the handle 167 in the opposite direction and contracts the clamping jaws onto the work so that it is firmly engagedflt being understood, of course, that thework is properly applied to the spiked head center 74.

When the table is then shifted rearwardly by manipulation of the handle 37, the shaft 126 is automatically unlocked and the worm and worm-wheel are automatically brought into operative re-engagement.

It is to be understood that as the table swings forwardly into inoperative position, thecovcr 52 comes down overthe knives to shield theworlnnan, and that when the table swings rearwardly into operative position the cover opens up to expose the knives for action on the stock.

Those skilled inthis art will have no dif-; ficulty in understanding the advantages accruing from the use of such an appliance, and they will understand thatthe invention is not limited and restricted to'the precise and exact structural details presentedpsince these may bemodified within comparatively wide limits without departure from the heart and essence of the invention and without the Sacrifice of any of its substantial benefits and advantages.

I claim: v

1. In a turning appliance of the character described, the combination of means to clamp the stock to be turned, constantly-rotated driving means, means opcratively connecting said driving means with said clamping contractablestock-clamping jaws mounted on and rotatable with said supporting-means, threads on said jaws, a spirally-threaded scroll-element rotatable on said supporting- 7 means and having its thread in operative engagement with said jaw-threads, a gear fixed to and rotatable with said scroll-element, a pinion in mesh with said gear, a handle to turn said pinion, a gear fixed to said supporting-means,a pinion to rotate said latter gear, means to shift said supporting-means and the jaws into andout ofstock-turning position, and means to automatically lock said supporting-means gearand its pinion against turning when said supporting-means and its stocksclamping jaws are in non-stock-turningposition, whercbythe jaws may be contracted or expandedby rotation of said handle while theparts are locked as specified.

3. In a turning appliance of the character described, the combination ofa table, means to shift said table into and out of stockturning position, means on said table to clamp the stock, means to rotate said stockclamping means having a collar with a series o'frecesses, a support onsaid table, a locking-pin slidable in said support and adapted to cnterany one of said collar-recesses, and

asubstantially stationary abutment in the path of travel of said pin adapted to project the latter into one .of the locking recesses of the collar when the table is retracted into non-stock-turning position.

4. In a turning appliance of the character described, the combination of a table, means to shift said table into and out of stockturning position, means on said table to clamp the stock, means to rotate said stockclampmg means having a collar with a series of recesses, a support on said table, asprmg:

retracted sleeverslidable a bearing in said mounted supporting-means, expandible and contractable stock-clan'iping jaws mounted on androtatable with said supportirig-means, threads on said jaws, a spirally-threaded scroll-element rotatable on said supportingmeans and having its thread in operath e engagement with sa d jaw-threads, a gear fixed to and rotatable with-said scroll-elen'icnt, a pinion in mesh with said gear, a handle to turn said pinion, a gear fixed to said supporting-means, a pinion to rotate said latter gear, means to shift said supporting-menns and the jaws into and out of stock-turning position, and means to automatically lock said supporting-means,a gear and its pinion against turning when said supporting-means and its stock-clamping jaws are in non-stockturning position whereby the jaws may be contracted or expanded by rotation of said handle while the parts are locked as specified, said locking means comprising a collar rotatable with said second pinion and having a series of locking recesses, a support shiftable with said supporting-means and its jaws, a locking-pin slidable in said support and adapted to enter any one of said collar recesses, and a substantinny-stationary abutment in the path of travel of said lockingpin adapted to project the latter into one of the locking recesses of the collar when the supporting-means and jaws are retracted into non-stocking-turning position.

6. In a turning applianceof the character described, the combination of a rotatablymounted supporting-means, expandible and contractable stock-clamping jaws mounted on and rotatable with said supporting-mcans, threads on said jaws, a spirally-threadcd scroll-elen1ent rotatable on said upportingmeans and having its thread in operative ongagelnent with said jaw-tln'cads, a gear tired to and rotatable with said scroll-elenlcnt, a pinion in mesh with said gear, a handle to turn said pinion, a gear fixed to said supportinganeans, a pinion to'rotate said latter gear, means to shift said supporting-means and the jaws into and out of stock-turning position, and means to automatically lock said supporting-means, gear and its pinion against turning when said supporting-means and its stock-clamping jaws are in non-stockft G turning position whereby the jaws may be contracted or expanded by rotation of said handle While the parts are looked as specilied, said locking means comprising a collar rotatable with said second pinion and having a series of locking recesses, a support shiftable with said supporting-means and its jaws, a spring retracted sleeve slidable in a bearing in said support, a lockingpin slid able in a bearing in said sleeve and adapted to enter any one of said locking recesses, a spring tending to slide said locking-pin toard said collar, and a substantially stationary abutment in the path of travel of said sleeve and adapted to project theyielding locking-pin into one of the locking recesses of the collar when the parts are retracted into IIOIbSCOCli-ttll'lliilglJOSltlOH, the locking-pin spring permitting the pin to yield temporarily until one of the recesses of the collar comes into register With the pin.

'2'. In a turning appliance of the character dcsc "ibed, the combination of a table, a headstock on said table, means to rotate said heard-stock, means on said table adjustable toward and from saidhead-stock to clamp the stock to be turned, means to shift said table to carry the stock associated with said head-stock and clamping means into and out of stock-turningposition, a shaft, means to rotate said shaft, gearing between said shaft and stock-clamping means, whereby the rotation of the shaft 1s transmitted to said and release the stock, and means to lock said 7 shaft automatically against rotation When said table 1s moved out of stock-turmng poing and expanding means. j

8. In a turning appliance of the character described, the combination of a table, a revolubleheadstock on said table, revoluble expandible and contractable means on said table adjustable toward and from said headstock to clamp the stock to be turned, means to shift said table to carry the stock associated with said head stock and clamping means into and out of stock-turning position, constantly-rotating driving means, means to expand and contract said stockclamping means to grasp and release the stock, means to connect said head-stock and stock-clamping means to said driving means to cause their rotation When the stock is in turning position and to automatically break such driving connection When the stock is in non-turning position, andmeans to lock said stock-clamping means automatically in definite positions against rotation to permit operation ofsaid contracting and expanding means When said table is moved out of stockturning position; I r

In Witness whereof I have hereunto set my hand.

DAVID TUROOTT,

sition to permit operation of said contract 

